LS7213R

Overview

The LS7213R is a programmable digital delay timer manufactured by LSI Computer Systems. It features an RC-controlled on-chip oscillator and provides eight timing ranges across four operational modes. Key functional blocks include a Power-On-Reset (POR) circuit and a dedicated reset input for aborting delays. The device utilizes a 14-pin dual in-line package with pin assignments including D3, D2, D1, FLASHEN, A, B, VSS, and (-V).

Feature Summary

• Eight selectable timing ranges
• Four distinct operating modes
• RC-controlled on-chip oscillator
• Integrated Power-On-Reset (POR)
• Reset input for delay abort

Applications

• Programmable digital delay generation
• Timing control circuits requiring RC oscillation
• Systems necessitating power-on reset sequencing

Procurement Notes

Verify the manufacturer status as LSI Computer Systems or LSI/CSI. Confirm the specific package type and pinout compatibility for the 14-pin configuration. Ensure the design supports the required RC oscillator components for the selected timing range.

Selection Notes

Select based on the required timing range from the eight available options. Verify that the system architecture accommodates the four operational modes. Ensure the external RC components meet the oscillator specifications for accurate delay times.

Part Context

This component belongs to the LS7213 series of programmable timers. It is designed for applications requiring precise digital delay functions without external microcontrollers. The inclusion of POR and abort features enhances reliability in timing-critical systems.